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This is Castleton Tower, as seen from Castle Valley near Moab, Utah. It rises 400 feet and is composed of Wingate sandstone. It rests on a 1,000 foot tall cone of lesser rock. Much of the formation is coated in a white glaze of calcite. The tower is a popular destination for rock climbers.

Castle Valley is a very small town, home to roughly 350 people, including musicians, authors, artists, scientists, and many others.

LEARN NC, a program of the UNC School of Education, finds the most innovative and successful practices in K-12 education and makes them available to the teachers and students of North Carolina - and the world.